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Finding the Fourth Proportional to 78,304.92, 117,445.14 and 25,713.96

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Solution

The fourth proportional to 78,304.92, 117,445.14 and 25,713.96 is: 38,566.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,304.92 : 117,445.14 = 25,713.96 : x
  2. Step 2: Convert to fraction form
    78,304.92/117,445.14 = 25,713.96/x
  3. Step 3: Cross multiply
    78,304.92x = 117,445.14 × 25,713.96
  4. Step 4: Simplify right side
    78,304.92x = 3,019,979,632.15
  5. Step 5: Solve for x
    x = 3,019,979,632.15/78,304.92
  6. Step 6: Final answer
    x = 38,566.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.